Veneer box and method of manufacturing the same



g- 6, E. VON MALTITZ 1,723,452

VENEER BOX AND METHOD OF MANUFACTURING THE SAME Filed 001;. 29 1926 fill enter 614.3877 'Vin 7 741157 Patented Aug. 6, 1929.

UNITED STATES PATENT OFFICE.

EU'GEN VON MALTITZ, OF THE HAGUE, NETHERLANDS, ASSIGNOB TO THE FIRM. J. BR'UNING 6i; ElOI-IN AKTIEN GLE SELLSUHAFT, OI" POTSDAllTi, NEAR BERLIN, GERMANY.

VENEER BOX AND METHOD ()1? MANUFACTURING THE SAME.

Application filed October 29, 1926, Serial No. 1425,064, and in Germany September 9, 1926.

This invention relates to a method of manutacturing cases or boxes for cigz'uiettcs and cmitainers oi any kind for packing purposes from veneer, composite and shuted wood panels. litany cli'orts have already been made to commercially li'lllllll'tZLCtlllG in a continuous process coi'ltaincrs from veneer, but it has not been. possible to produce coniittllIlCJt; tree from. rupture from the very delicate thin plywood, as on account of the material. being brittle the bottom and the edges split during howling or heading.

Eliorts have also been made to work the plywood for the manufacture of containers in a wet state to obtain a certain flexibility of the Sl'I'l'lCtUlQ :lor the purpose of preventing splitting or breaking during the bending oi? the edges. The disadvantage of this wet working, however, is the fact that after drying the finished product shrinks and the con tainer assimies a bad appearance and an. unequal form.

The object oi this invention is to obviate all. these disadvantages and to provide a method which allows a most simple, cheap and reliable manufacture oi? containers 'lreo ir on l rupture.

The new method. may for example be can ried out by the means shown in the accompanying drawii'ig although any other means siiitablo for the purpose may be used without departing from the invention.

Fig. l a perspective view showing applicants device, and Figs. 2 and 3 are crosssections of modified forms of the steam nozzle.

The thin plywood serving :lor the manul'arture oi" the containers is cut in hands or breadths the dimensions of which corrcspend to the size and depth of the container (bottom or cover). In the drawing the plywood til is shown diagrammatically. S and 3 show the portions of the plywood S which form the longitudinal side parts. At a suit able point the plywood running or moving in special guides upon a working table is bronglit upon or under a steam blast the nozzle 6 of whicl'i is formed to co respond to the container to be made. The steam jet impinges upon the plywood along the lines 1, i2, 3, 4: and softens the plywood at these lines sutliciently and in such a manner that the parts of the plywood bounded by the lines 1, 2, 3, 4; maintain their solid structure. After the steam has sufiiciently acted upon the plywood the steam blast is lifted a little by any suitable device, whereby the mandrel f provided upon the steam tubes is gently pressed into the plywood at the lines 1, 2, 3, 4 softened by the steam and the bending or heading of the edges (1 6, 0, (Z without splitting in the next step oi. the manufacture is prepared. The mandrel f" (Fig. 3) may also be so made as to silnu taneously form the nozzle 6 instead of being constructed as a special device as shown in Fig. 1.

After a corresponding preparing under or in connection with the steam blast the Veneer foil S is fed upon. the working table underneath the press which carries the patrice and matrice in the form of the container to be made and which by suitable pressure eillccts, as illustrated in the lower part of Fig. 1,'the manufacture of an upper or lower part oil: the container, the matrix hereby pressinginto the softened lines 1, 2, 3, 4 and fol-mi n g from the parts S S S, S the edges bounded by a, 7), a, (Z.

lVhat I claim is:

1. In a method of making box parts from plywood by bending such material, comprising cutting the material into sheets having dimensions corresponding to certain dimensions of the finished box parts, simultaneously moistening by steam under pressure the plywood on lines on which the material is to be bent and bending the material along the lines thus moistened to form said box parts to shape.

2. In a incthod of making box parts as claimed in claim 1, in which there is employed a steam blower corresponding in shape, to the outline of the bottom oi? the box part.

In testimony whereof I atlix my signature. 

